Piculet

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- Remove reducing functions; selected texts will always be concatenated
(using an optional separator).
- Convert string normalization and cleaning into transformers.
- Add support for chaining transformers.
- Change chaining symbol from "->" to "|".

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- Drop support for Python 2 and 3.4.
- Add support for absolute XPath queries in ElementTree.
- Add support for XPath queries that start with a parent axis in ElementTree.
- Add shorthand notation for path extractors in specification.
- Cache compiled XPath expressions.
- Remove HTML charset detection.
- Command line operations now read only from stdin.
- Simplify CLI commands.

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- Accept both .yaml and .yml as valid YAML file extensions.
- Documentation fixes.

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- Bumped version to 1.0.

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- Dropped support for Python 3.3.
- Fixes for handling Unicode data in HTML for Python 2.
- Added registry for preprocessors.

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- Support for writing specifications in YAML.